Medium-manganese wear-resistant steel and preparation method thereof

The invention belongs to the technical field of metal materials, and discloses medium-manganese wear-resistant steel and a preparation method thereof. The medium manganese steel comprises the following chemical components in percentage by weight: 0.9 to 1.2 percent of C, 7.5 to 8.5 percent of Mn, 0.55 to 0.65 percent of Si, 0.01 to 0.15 percent of Ti, 1.5 to 2.5 percent of Cr, 0.2 to 0.4 percent of Mo, 0.1 to 0.2 percent of V, less than or equal to 0.003 percent of S, less than or equal to 0.005 percent of P and the balance of Fe and impurities. According to the medium manganese steel prepared through the method, good impact toughness is kept, and meanwhile the hardness of the medium manganese steel is improved. 本发明属于金属材料技术领域，本发明公开了一种中锰耐磨钢及其制备方法。本发明的中锰钢包括以下重量百分比的化学成分：C：0.9～1.2％，Mn：7.5～8.5％，Si：0.55～0.65％，Ti：0.01～0.15％，Cr：1.5～2.5％，Mo：0.2～0.4％，V：0.1～0.2％，S≤0.003％，P≤0.005％，余量为Fe和杂质。本发明制备的中锰钢在保持了良好的冲击韧性的同时，还提升了中锰钢的硬度。